WO2008132786A1 - Backlight comprising hot cathode fluorescent lamp and liquid crystal display device - Google Patents

Backlight comprising hot cathode fluorescent lamp and liquid crystal display device Download PDF

Info

Publication number
WO2008132786A1
WO2008132786A1 PCT/JP2008/000922 JP2008000922W WO2008132786A1 WO 2008132786 A1 WO2008132786 A1 WO 2008132786A1 JP 2008000922 W JP2008000922 W JP 2008000922W WO 2008132786 A1 WO2008132786 A1 WO 2008132786A1
Authority
WO
WIPO (PCT)
Prior art keywords
cathode fluorescent
fluorescent lamp
hot cathode
backlight
liquid crystal
Prior art date
Application number
PCT/JP2008/000922
Other languages
French (fr)
Japanese (ja)
Inventor
Takeshi Arakawa
Shiro Otake
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Publication of WO2008132786A1 publication Critical patent/WO2008132786A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
    • F21V19/008—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
    • F21V19/009—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps the support means engaging the vessel of the source
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

Disclosed is a backlight (100) comprising a hot cathode fluorescent lamp (10) and a lamp holder (75) holding the hot cathode fluorescent lamp (10). The hot cathode fluorescent lamp (10) is composed of a bulb (12) and a filament (14). The lamp holder (75) is arranged on a part of the outer surface of the bulb (12) corresponding to a filament region (14c) where the filament (14) is arranged, and this lamp holder (75) is made of a metal material. Heat problems of the backlight (100) comprising a hot cathode fluorescent lamp are solved by such a simple structure.
PCT/JP2008/000922 2007-04-12 2008-04-09 Backlight comprising hot cathode fluorescent lamp and liquid crystal display device WO2008132786A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-104991 2007-04-12
JP2007104991A JP2008262818A (en) 2007-04-12 2007-04-12 Backlight comprising hot cathode fluorescent lamp

Publications (1)

Publication Number Publication Date
WO2008132786A1 true WO2008132786A1 (en) 2008-11-06

Family

ID=39925259

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000922 WO2008132786A1 (en) 2007-04-12 2008-04-09 Backlight comprising hot cathode fluorescent lamp and liquid crystal display device

Country Status (4)

Country Link
JP (1) JP2008262818A (en)
KR (1) KR20100014238A (en)
TW (1) TW200903104A (en)
WO (1) WO2008132786A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011033847A1 (en) * 2009-09-15 2011-03-24 シャープ株式会社 Lighting device, display device, and television receiver
EP2479475A1 (en) * 2009-09-15 2012-07-25 Sharp Kabushiki Kaisha Lighting device, display device, and television receiver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011065769A (en) * 2009-09-15 2011-03-31 Hitachi Consumer Electronics Co Ltd Backlight and liquid crystal display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03274605A (en) * 1990-03-23 1991-12-05 Toshiba Lighting & Technol Corp Illuminating device
JPH0882798A (en) * 1994-09-09 1996-03-26 Casio Comput Co Ltd Display device with back light
JP2006066363A (en) * 2004-01-14 2006-03-09 Sharp Corp Lighting device for display unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03274605A (en) * 1990-03-23 1991-12-05 Toshiba Lighting & Technol Corp Illuminating device
JPH0882798A (en) * 1994-09-09 1996-03-26 Casio Comput Co Ltd Display device with back light
JP2006066363A (en) * 2004-01-14 2006-03-09 Sharp Corp Lighting device for display unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011033847A1 (en) * 2009-09-15 2011-03-24 シャープ株式会社 Lighting device, display device, and television receiver
EP2479475A1 (en) * 2009-09-15 2012-07-25 Sharp Kabushiki Kaisha Lighting device, display device, and television receiver
JPWO2011033847A1 (en) * 2009-09-15 2013-02-07 シャープ株式会社 Lighting device, display device, and television receiver
EP2479475A4 (en) * 2009-09-15 2013-04-24 Sharp Kk Lighting device, display device, and television receiver

Also Published As

Publication number Publication date
TW200903104A (en) 2009-01-16
KR20100014238A (en) 2010-02-10
JP2008262818A (en) 2008-10-30

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